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From: Catalin Marinas <catalin.marinas@arm.com>
To: Ada Couprie Diaz <ada.coupriediaz@arm.com>
Cc: Kiryl Shutsemau <kirill@shutemov.name>,
	Will Deacon <will@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	James Morse <james.morse@arm.com>,
	Usama Arif <usama.arif@linux.dev>,
	"Kiryl Shutsemau (Meta)" <kas@kernel.org>,
	Marc Zyngier <maz@kernel.org>,
	Doug Anderson <dianders@chromium.org>,
	Breno Leitao <leitao@debian.org>,
	Jinjie Ruan <ruanjinjie@huawei.com>,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	Linus Walleij <linusw@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Huth <thuth@redhat.com>, Dawei Li <dawei.li@linux.dev>,
	mrigendrachaubey <mrigendra.chaubey@gmail.com>,
	kernel-team@meta.com, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v2 1/2] arm64: sdei: Run the event handler on the kernel vectors
Date: Fri, 6 Nov 2026 18:35:57 +0000	[thread overview]
Message-ID: <au4eDdjGkb9tn_T_@arm.com> (raw)
In-Reply-To: <1bae50ad-a65e-4ccb-b247-8d9544e4c5ee@arm.com>

Hi Ada,

On Fri, Nov 06, 2026 at 04:14:56PM +0000, Ada Couprie Diaz wrote:
> What are your thoughts ?
> I understand that this is a completely different approach, but I feel it
> would be more in line with what we already do for other entry paths.

I agree moving this closer to the normal entry path makes sense and the
PMR handling probably belongs there as well. However, I think there are
implications for VHE (the handler runs at EL2 with VBAR_EL2) and for an
event that interrupts a KVM world switch on the hyp vectors. I need to
dig some more into this.

In the meantime, I queued Kiryl's two patches, they're small enough for
stable. Any entry.S rework can come on top of them for future kernels.

Thanks.

-- 
Catalin

  reply	other threads:[~2026-11-06 18:36 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-11-05 12:08 [PATCH v2 0/2] arm64: sdei: Handle exceptions taken inside the event handler Kiryl Shutsemau
2026-11-05 12:08 ` [PATCH v2 1/2] arm64: sdei: Run the event handler on the kernel vectors Kiryl Shutsemau
2026-11-05 18:37   ` Catalin Marinas
2026-11-06 11:48     ` Kiryl Shutsemau
2026-11-06 17:38       ` Catalin Marinas
2026-11-06 16:14   ` Ada Couprie Diaz
2026-11-06 18:35     ` Catalin Marinas [this message]
2026-11-05 12:08 ` [PATCH v2 2/2] arm64: sdei: Preserve the interrupted context's exception registers Kiryl Shutsemau
2026-11-05 15:41   ` Breno Leitao
2026-11-06 11:34     ` Kiryl Shutsemau
2026-11-06 11:53       ` Breno Leitao
2026-11-06 18:36 ` [PATCH v2 0/2] arm64: sdei: Handle exceptions taken inside the event handler Catalin Marinas

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